* {
    padding: 0;
    margin: 0;
    list-style: none;
    box-sizing: border-box;
}

.box {
    width: 500px;
    border: 1px solid #f66;
    background-color: ghostwhite;
    margin: 50px auto;
    padding: 20px;
}
.header {
    display: flex;
    height: 45px;
    padding: 5px;
    border: 1px solid #f66;
    justify-content: space-between;
}
.header input {
    flex: 1;
    padding-left: 10px;
    font-size: 18px;
}
.header button {
    width: 80px;
}
.cell {
    border: 1px solid #f66;
    padding: 10px;
    background-color: white;
}
.cell li {
    height: 40px;
    line-height: 40px;
    background-color: #F6F6F6;
    display: flex;
    justify-content: space-between;
    padding: 5px 20px;
}
.cell li button {
    width: 60px;
}
.footer {
    display: flex;
    justify-content: space-between;
    height: 45px;
    border: 1px solid #f66;
    line-height: 45px;
    padding: 0 10px;
}